/*
 * Copyright (c) 2009, Hamish Morgan. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the University of Sussex nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package locusts.server.admin;

import javax.swing.ComboBoxModel;
import javax.swing.event.ListDataListener;
import locusts.common.entities.EntityType;
import locusts.common.entities.EntityTypeList;

/**
 * A  combo box model for handling the "type" property of an entity. It
 * allows the user to select a type from a list, rather than type in the id.
 *
 * @author Hamish Morgan
 */
public class EntityTypeComboBoxModel implements ComboBoxModel {

    private final EntityTypeList types;
    private EntityType selected;

    public EntityTypeComboBoxModel(EntityTypeList types) {
        this.types = types;
        if(types.size() > 0)
            this.selected = types.iterator().next();
        else this.selected = null;
    }

    public void setSelectedItem(Object o) {
        if (o instanceof EntityType && types.contains((EntityType) o)) {
            selected = (EntityType) o;
        } else {
            throw new RuntimeException("Unknown entity type");
        }
    }

    public Object getSelectedItem() {
        return selected;
    }

    public int getSize() {
        return types.size();
    }

    public Object getElementAt(int i) {
        return types.getId(i);
    }

    public void addListDataListener(ListDataListener listener) {
        types.addListDataListener(listener);
    }

    public void removeListDataListener(ListDataListener listener) {
        types.removeListDataListener(listener);
    }
}
